Patents by Inventor Michael R. Hennigan

Michael R. Hennigan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sound insulating space board
    Patent number: 4909003
    Abstract: A sound insulating space board apparatus (10) comprising an evacuated cellular array (14) sealingly engaged to an upper (18) and lower (19) planar member, wherein each of the planar members are provided with a layer of air impervious material (100), and each of the individual evacuated cells (15) in the cellular array (14) define a nine sided polyhedron configuration.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: March 20, 1990
    Inventor: Michael R. Hennigan